Kk. Han et K. Yasumoto, FVTD analysis of propagation of radio waves through modified T-junctions in two-dimensional tunnel, IEICE TR CO, E82B(5), 1999, pp. 780-784
Radio waves propagating through tunnels are strongly attenuated in the pres
ence of discontinuities such as bends and branches, The useful structural m
odifications are requested to get better circumstances for radio waves in t
unnels. In this paper, we propose several modifications arranged in a conve
ntional T-junction of two-dimensional tunnels and analyze the transmission
characteristics of radio waves by using the finite volume time domain (FVTD
) method.